how about added a public Entry getEntry(index i) which returns a specific entry
from your array?
Dave
"Gao, Gang" <[EMAIL PROTECTED]> on 09/06/2001 12:58:04
PM
Please respond to [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
cc: (bcc: David Hay/Lex/Lexmark)
Subject: Array in nested bean form class issue?
Hi,
I'm trying to use nested class array in my project. The jsp page is like :
<html:text property="entry[0].customerName" size="18"/>
<html:text property="entry[1].telephoneNum" size="3" maxlength="3"/>
and in the Form bean class, I define the class:
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import common.Entry;
public final class RequestForm extends ActionForm {
private Entry[] entry = new Entry[10];
public Entry[] getEntry() {
return entry;
}
public void setEntry(Entry[] entry) {
this.entry= entry;
}
}
Entry class is like:
package common;
import java.io.Serializable;
public final class Entry implements Serializable {
private String customerName = null;
private Phone telephoneNum = new Phone();
public String getCustomerName() {
return customerName;
}
public void setCustomerName(String customerName) {
this.customerName = customerName;
}
public Phone getTelephoneNum() {
return telephoneNum;
}
public void setTelephoneNum(Phone telephoneNum) {
this.telephoneNum = telephoneNum;
}
}
so when I compile it and run the jsp page in weblogic 6.0 server, I get a
error message:
Servlet failed with exception:
java.lang.IllegalArgumentException: Null property value for 'entry[0]'
at
org.apache.struts.util.PropertyUtils.getNestedProperty(PropertyUtils.java:34
7)
at
org.apache.struts.util.PropertyUtils.getProperty(PropertyUtils.java:381)
at
org.apache.struts.util.BeanUtils.getArrayProperty(BeanUtils.java:189)
at
org.apache.struts.taglib.html.SelectTag.doStartTag(SelectTag.java:289)
at
jsp_servlet._request_manual_order._jspService(_request_manual_order.java:270
)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
:213)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
:246)
at
weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImp
l.java:157)
at
org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.ja
va:1697)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1540)
at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:509)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
:213)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletCo
ntext.java:1265)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java
:1631)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
Please tell me what is wrong with my Form Bean.
Thanks
Frank
Title: Array in nested bean form class issue?
Hi,
I'm trying to use nested class array in my project. The jsp page is like :
<html:text property="entry[0].customerName" size="18"/>
<html:text property="entry[1].telephoneNum" size="3" maxlength="3"/>
and in the Form bean class, I define the class:
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import common.Entry;
public final class RequestForm extends ActionForm {
private Entry[] entry = new Entry[10];
public Entry[] getEntry() {
return entry;
}
public void setEntry(Entry[] entry) {
this.entry= entry;
}
}
Entry class is like:
package common;
import java.io.Serializable;
public final class Entry implements Serializable {
private String customerName = null;
private Phone telephoneNum = new Phone();
public String getCustomerName() {
return customerName;
}
public void setCustomerName(String customerName) {
this.customerName = customerName;
}
public Phone getTelephoneNum() {
return telephoneNum;
}
public void setTelephoneNum(Phone telephoneNum) {
this.telephoneNum = telephoneNum;
}
}
so when I compile it and run the jsp page in weblogic 6.0 server, I get a error message:
Servlet failed with exception:
java.lang.IllegalArgumentException: Null property value for 'entry[0]'
at org.apache.struts.util.PropertyUtils.getNestedProperty(PropertyUtils.java:347)
at org.apache.struts.util.PropertyUtils.getProperty(PropertyUtils.java:381)
at org.apache.struts.util.BeanUtils.getArrayProperty(BeanUtils.java:189)
at org.apache.struts.taglib.html.SelectTag.doStartTag(SelectTag.java:289)
at jsp_servlet._request_manual_order._jspService(_request_manual_order.java:270)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:213)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:246)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:157)
at org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.java:1697)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1540)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:509)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:213)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:1265)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1631)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
Please tell me what is wrong with my Form Bean.
Thanks
Frank
